Vertical-milling-machine attachment



H. E. KEYES.

VERTICAL MILLING MACHINE ATTACHMENT.

nto?,

SH01/Meij H. E.V KEYES. VERTICAL MILUNG MACHINE ATTACHMENT.

APPLICATION FILED MAR.. 3.1919.

H E KEYES VERTICAL MILLING MACHINE ATTACHMENT.

APPLICATION FILED MAR. 3. |919.

Patented Oct. 25, 192.1.

l l I I I I I l l I I f 3 mln W 4 w f.

abtozmuj Unwin) STATES lmrnri'r oFFlcE.

HENRY E. KEYES, 0F PHILDELPHIA, PENNSYLVANIA.

VERTICALMILLING-MACINE. 1ATTACHMENT.

I Application led March 3,

To aZZ 'whom t may concern.'

Be it known that I, HENRY E. KEYES, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and lState of Pennsylvania, have invented a certain new and useful Improvement in Vertical-.Milling-Machine Attachments, of which the following is afull, clear, and exact description.-

The object of this invention is to provide an attachment for any horizontal, plain or other milling machine which has an overhanging arm, steady rest or bar and a cutter bar, mandrel or arbor to both of which the attachment is connected, said attachment being so constructed that it may be universally used to convert the machine into a vertical or angular milling machine.

The invention consists of a'divided clamping ring for use on the overhanging arm or steady rest bar of any machine at any point between the steady rest and the head of the machine, and having depending slotted hangers in the lower ends of which is pivoted a cutter head containing a tool socket, a

bearing adapted to be applied to the cutter bar or arbor, and gearing for transmitting the rotation of the arbor to the tool socket; the slotted hangers serving to compensate for the difference in distance apart of the overhanging arm and the arbor, and also serving to adjust the cutter head so that the angle of' operation of the tool may be varied with respect to the work on the work table of the machine.

The invention also comprises details of construction whereby the divided clamping ring may be fitted to overhanging arms or steady rest bars of different diameter; and also details of construction of the arbor connection, and the tool socket drive.

1n the accompanying drawings illustrating the invention, in the several figures of which like. parts are similarly designated, Figure 1 is a perspective view of the attachment applied to a horizontal milling machine, a portion of the head of such machine, its steady rest bar, its steady rest, and the work table being shown in dotted lines. Fig. 2 is a side elevation; Fig. 3 is a front elevation-and Fig. 4 is a rear elevation of the attachment on a smaller scale. Fig. 5 is a top plan view, taken in the plane of line A B, Fig. 2. Fig. 6 is a partial horizontal section and elevation of the head taken in the plane of line C D, Fig. 7, and Fig. 7 is Speccation of Letters Patent.

Patented Oct. 25, 1921.

1919. `serial No. 280,200.

a vertical section of said head taken in the plane of line E, F, Fig. 6.

T he head 1, the steady rest bar 2, the steady rest '3, the cutter bar, mandrel or arbor 4, and the work table 5 may be such as are common in horizontal milling machines of a great variety of types, to al1 of which my attachment is applicable.

My attachment comprises a divided clamping ring composed of segments .6 and 7, suitably jointed as by a hinge joint 8, and having a clamping bolt 9 pivoted at 10 to one of the segments, and adapted to engage ears 11 on the other segment so as to clamp the ring about the steady rest bar 2. The segment 6 may have any number of set-screws 12 by means of which the ring may be accurately fitted to the steady rest bar, and thereby compensate for variations in diameter of the steady rest bar on different machines. The segment 7 may have transverse lugs 18 to bear against the steady restl bar. As herein shown, the clamping bolt 9 may have the gripping collar 14 to engage notches 15 in thevears 11, and this collar is held in position by the nut 16, although any other usual or approved means may be used for effecting the locking of the segments of the clamping ring about the steady rest bar.

The segment 7 has a tubular lug 17 to receive a bolt 18 by means of which and the washers 19 and nut 20 a pair of longitudinally slotted parallel hangers 21 may be attached to the clamping ring and adjusted as to effective length on said clamping ring. As shown particularly in Figs. 6 and 7,

.the cutter head y22 has a casing divided lonpivotal movement on said hangers.v The` cutter head comprises two main parts, one

of which is adapted to be slipped upon the mandrel or arbor or cutter bar 4 and the other adapted to receive the tool socket, these two parts being arranged at right angles to one another. The first mentioned partl hasa sleeve 27 arranged in a suitable horizontal bearing in the casing and adapted to engage the mandrel or arbor 4, and provided with a keyvvay 28 to engage a corresponding key on the mandrel or arbor so as to cause the two to turn together. This sleeve may be secured in the bearing by any suitable means, as by a head 29 on one end and a nut 30 engaging a screwthread on the other end, so that the sleeve may be inserted and removed as desired. On this sleeve is a spiral gear 31 secured to it in any suitable manner to turn with it, and this gear meshes with a complemental -gear 32 on the tool socket 33 which is arranged in the other portion of the head and at right angles to the sleeve 27. This tool socket has a tool cavity-34 preferably of taper form, and'it issecured in the head portion in any suitable way, so as to be capable of rotating therein. I have shown the socketA as provided with a shoulder 35 which abuts against an adjacent portion of the head and its opposite end is internally screwthreaded to receive a plug 36 which is provided preferably with a washer or collar 37 and a nut 38. This plug 36 is slotted transversely as shown at 39 to'receive a complemental portion of a tool shank, and to assist the frictional engagement of the tool with the socket in turning the tool with the socket. In order to expedite the removal of the tool, the plug is perforated longitudinally to receive a pin 40 having a head 41 which may be tapped by a hammer or otherwise pressed to engage the shank ofthe tool and move the tool outwardly in a longitudinal direction. The tool ejector thus formed may be secured to the plug by means o f a screw 42 engaging said plug.

It will be understood that when power is applied to the mandrel or arbor 4 and the same' rotates, its motion is transmitted to the sleeve 27 and its gear 31 and thence to the gear 32 and the tool socket and its contained tool. If avertically arranged tool is needed for the work to be done, then the cutter head is arranged as indicated in Figs. 1 and 2, that is to say, in a horizontal plane, with the tool itself in a vertical plane. If, however, the work to be done requires arrangement of the tool at an angle, then the cutter head may be swung around on the mandrel or arbor as an axis in orderto set. the tool at the desired angle for the accomplishment of the work in hand. This adjustment of the head is accomplished by loosening the hangers 21 where engaged with the clamping ring and raising or lowering these hangers in accordance with the desired angularity of the tool direction.

One such adjustment of the tool is indicated by the dottedI lines, Fig. 2..

As already indicated, the attachment may be applied to any of the common and well known types of horizontal milling machines without dismembering the machines, since the clamping ring may be applied to the steady rest bar at any point between the steady rest and the'head of the machine, and the cutter head may be applied to the mandrel or arbor in the same relation. In order to apply the cutter head to the mandrel or arbor the latter is temporarily disconnected from the steady rest in the usual way when it is desired to change the mandrel or arbor, and after the cutter head is connected with such mandrel or arbor then re-connection of the mandrel or arbor with the steady rest is effected, and the machine is then readyfor operation with the attachment in position.

Spiral gearing is preferred in order to prevent chattering in the head, and in order to further reduce noise and friction, the joints may be supplied with any suitable antifriction washers, shims, or similar devices 43, as shown in Figs. 6 and 7. The upper and lower members of the head may `be and preferably are provided with complemental male and female joints 44 in order to make an accurate and oil-tight lit.

As will be observed, the tool socket 34 has a taper fit at'45 in its portion of the head, and this feature in connection with the nut at the top and the shims provides for the taking up of wear.

If desired, further security of the tool in its socket may be effected by means of asetscrew46 adapted to engage a notch in the side of the tools shank.

As already suiliciently indicated, the attachment of this invention is designed to and in fact accomplishes the ready conversion of a horizontal milling machine into yone of vertical type without the necessity of being specially built and fitted for any particular type, so long as an overhanging arm or steady rest bar and a mandrel or arbor are available. l -It is to be specially noted that my attachment in its universal character may be applied to any horizontal orf plain milling machine having an overhanging arm or steady rest bar or the like and a cutter bar, mandrel or arbor, and it 1 may be operatively fitted to the latter without resort to any 110 gibs, bolts, clamps, or auxiliary or addedparts other than what is used to fit the regular a plain milling cutters to such cutter bar, mandrel or arbor. Y

The juxtaposed screws 12 and lugs 13 115 make it possible to grip arms or bars of different size with a four-point contact or grip, and this adds to the universal utility of the attachment.

I have thus described one practical einbodnnent of my-invention, but it is to be understood that variations in details of construction and arrangement are permissible within the spirit and scope of the invention as herein claimed.

.1. A milling machine attachment, com- 4 prlsing a clamping ring to engage a steady rest bar of a machine, a cutter head adapted to engage a mandrel or arbor of the machine, a tool socket in said cutter head, means to transmit', motion from the mandrel or arbor to the tool socket, and hangers adjustably connecting the clampin ring and cutter head and pivotally applied to the cutter head. y

2. A milling machine attachment, .comprising a clamping ring to engage a steady rest bar of a machine, a cutter head adapted to engage a mandrel or arbor of the machine, a tool socket in said cutter head, means to transmit motion 'from the mandrel or arbor to the tool socket, and hangers depending rom the clamping ring and pivotally connected with the' cutter head whereby the angle of the cutting tool in said cutter head may be changed.

3. A milling machine attachment, com prising a clamping ring to engage a` steady rest bar of a machine, a cutter head adapted to engage a mandrel or arbor of the machine, a tool socket in said cutter head, means to transmit motion from the mandrel or arbor to the tool socket, and longitudinally slotted hangers adjustably connected with the clamping ring at or near their upper ends and pivotally connected with the cutter head at their lower ends, whereby the cutter head may be turned upon the mandrel or arbor as an axis and the cutter or tool placed to operate vertically or at an angle.

4. A milling atachment for that class of horizontal milling machines which have a ksteady rest bar, a steady rest, and a mandrel or arbor, same comprising a divided clamping rlng adapted to engage the steady rest bar at lany point between the steady rest and the head of themachine, depending hangers adjustably connected with said clamping ring, and a cutter head pivotally connected with the lower ends of said hangers vand having a sleeve to engage and rotate with the mandrel or arbor, a rotary tool socket, and gearing connecting said sleevel ing an overhanging'V arm or the like and a cutter bar, mandrel or arbor, same compusing a clamping ring provided with means for engaging' such arms of different diameter, a cutter head adapted to operatively engage the cutter bar, mandrel or arborwithout resort to added .parts Iother than such as may be required to fit ordinary cutters to. such cutter bar, mandrel or arbor, and means adjustably applied to the clamping ring and pivotally applied to the cutter head to connect the clamping, ring and cutter head and permit angular adjustment of'said cutter head.

6. A milling machine attachment adapted for universal applicationl to and use upon horizontal or plain milling machines having an overhanging arm or the like and a cutter bar, mandrel or arbor, same comprising a clamping ring provided with means for engaging such arms of. diHerent diameter, a cutter head adapted to opera tively engage the cutter bar, mandrel or arbor without resort t0 added parts other than such as may be required to iit ordinary cuttersto such cutter bar, mandrel or arbor, and longitudinally slotted hangers adjustably applied to said clamping ring and adjustably connecting said clamping ring and cutter head and pivotally applied to the cutter head to chan e the angle of operation of the cutter head.

In testimony whereof I have hereunto set..

my hand this 21st day of February, A. D. 1919. Y

HENRY E. KEYES.

Witnesses:

J. RUGAN NEFF,

(JEORGE A.` CooK. 

